HP dv9000/9700 sound problem

[Lone99star]

I have a laptop on my bench that came in for virus removal, manual removal, then finished it off with MB.

The customer complained about not having sound also, he said occasionally it would find new hardware and the sound would start working for a few minutes then go silent.
Device manager shows the audio device as bluetooth speakers, I scanned for new hardware, none found. Add/remove hardware shows Realtek Audio driver.
I uninstalled the driver and downloaded latest from HP, driver installed and shows in device manager but with Code 10 error.

Flashed bios, updated chipset and installed every possible driver from HP and Realtek, no joy.

This is a Vista sp1 machine, so I prepped and installed sp2 and all updates, uninstalled bluetooth and realtek drivers, reinstalled realtek driver again, no joy.

Question #1 does Vista use UAA and if so would it show in Device Manager?

I believe it is a hardware issue but with Vista it's hard to say.
Any suggestions would be appreciated.

[Vicenarian]

Sounds like hardware...try booting with a Ubuntu live CD and see if you get sound there perhaps?

[Lone99star]

Thanks for the reply and confirming my suspicions, I forget to mention I have booted to several cds with the same results.

[Vicenarian]

definitely sounds like hardware then...and with the dv6/9/etc. series of machines history of issues, I wouldn't be suprised anyway.

[Xander]

Does it have a headphone jack? Does that work?

[Lone99star]

I connected powered and unpowered speakers to the headphone jack, nothing.
Bluetooth works fine.

[meanderer]

if the hardware doesn't show up, the headphone jack wouldn't be working.

sounds like hardware issue. Maybe install a USB card and live with it?